Digital sample-rate conversion

Functions
int	dspl_resample_lagrange (double *s, int n, int p, int q, double frd, double **y, int *ny)
	Real signal digital resampling by using polynomial Lagrange interpolation. More...
int	dspl_resample_spline (double *s, int n, int p, int q, double frd, double **y, int *ny)
	Real signal digital resampling by using polynomial spline interpolation. More...

Detailed Description

Function Documentation

dspl_resample_lagrange()

int dspl_resample_lagrange	(	double *	s,
		int	n,
		int	p,
		int	q,
		double	frd,
		double **	z,
		int *	nz
	)

Real signal digital resampling by using polynomial Lagrange interpolation.

Function convert input signal s samplerate p/q times and adds fractional delay from 0 to 1.

Parameters

[in]	s	Pointer to the input signal s vector. Vector size is [n x 1].
[in]	n	Size of the input signal vector.
[in]	p	resampling factor p/q numerator.
[in]	q	resampling factor p/q denominator.
[in]	frd	Additional fractional delay value. Fractional delay value must be from 0 to 1.
[out]	z	Output signal pointer. Vector size is n*q/p. Memory must be allocated.
[in]	nz	Number of samples which is allocated for output vector z.

Returns

DSPL_OK if signal has been resampled successfully, error code otherwise.

Author

Sergey Bakhurin. www.dsplib.org

Examples:

resample_lagrange_ex_fs.c, resample_lagrange_ex_interp.c, resample_lagrange_filter_frac_delay.c, resample_lagrange_filter_interp.c, and resample_spline_ex_fs.c.

dspl_resample_spline()

int dspl_resample_spline	(	double *	s,
		int	n,
		int	p,
		int	q,
		double	frd,
		double **	z,
		int *	nz
	)

Real signal digital resampling by using polynomial spline interpolation.

Function convert input signal s samplerate p/q times and adds fractional delay from 0 to 1.

Parameters

[in]	s	Pointer to the input signal s vector. Vector size is [n x 1].
[in]	n	Size of the input signal vector.
[in]	p	resampling factor p/q numerator.
[in]	q	resampling factor p/q denominator.
[in]	frd	Additional fractional delay value. Fractional delay value must be from 0 to 1.
[out]	z	Output signal pointer. Vector size is n*q/p. Memory must be allocated.
[in]	nz	Number of samples which is allocated for output vector z.

Returns

DSPL_OK if signal has been resampled successfully, error code otherwise.

Author

Sergey Bakhurin. www.dsplib.org

Examples:

resample_spline_ex_fs.c, resample_spline_ex_interp.c, resample_spline_filter_frac_delay.c, and resample_spline_filter_interp.c.